modules/core/src/test/java/org/apache/ignite/jvmtest/RegExpTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.ignite.jvmtest;

import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.apache.ignite.internal.util.typedef.X;
import org.apache.ignite.internal.util.typedef.internal.U;
import org.junit.Test;

/**
 * Java reg exp test.
 */
public class RegExpTest {
    /**
     * @throws Exception If failed.
     */
    @Test
    public void testRegExp() throws Exception {
        String normal =
            "swap-spaces/space1/b53b3a3d6ab90ce0268229151c9bde11|b53b3a3d6ab90ce0268229151c9bde11|1315392441288";

        byte[] b1 = new byte[200];
        byte[] b2 = normal.getBytes();

        U.arrayCopy(b2, 0, b1, 30, b2.length);

        CharSequence corrupt = new String(b1);

        String ptrn = "[a-z0-9/\\-]+\\|[a-f0-9]+\\|[0-9]+";

        Pattern p = Pattern.compile(ptrn);

        Matcher matcher = p.matcher(corrupt);

        assert matcher.find();

        X.println(String.valueOf(matcher.start()));

        assert normal.matches(ptrn);
    }
}